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| author |   Chuck Lever <chuck.lever@oracle.com> | 2025-10-16 09:49:56 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2025-11-10 09:31:52 -0500 |
| commit | c96573c0d75db3f8478000d0d392a9cdb95adbed (patch) | |
| tree | 1dddb09e3f2200386113c254a450f98f5e0b5f3e /net/tipc/net.c | |
| parent | NFSD: Skip close replay processing if XDR encoding fails (diff) | |
| download | wireguard-linux-c96573c0d75db3f8478000d0d392a9cdb95adbed.tar.xz wireguard-linux-c96573c0d75db3f8478000d0d392a9cdb95adbed.zip | |
NFSD: Never cache a COMPOUND when the SEQUENCE operation fails
RFC 8881 normatively mandates that operations where the initial
SEQUENCE operation in a compound fails must not modify the slot's
replay cache.
nfsd4_cache_this() doesn't prevent such caching. So when SEQUENCE
fails, cstate.data_offset is not set, allowing
read_bytes_from_xdr_buf() to access uninitialized memory.
Reported-by: rtm@csail.mit.edu
Closes: https://lore.kernel.org/linux-nfs/c3628d57-94ae-48cf-8c9e-49087a28cec9@oracle.com/T/#t
Fixes: 468de9e54a90 ("nfsd41: expand solo sequence check")
Reviewed-by: NeilBrown <neil@brown.name>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'net/tipc/net.c')
0 files changed, 0 insertions, 0 deletions